diff --git a/VectorTest.java b/VectorTest.java
index 956b21a..5a1ff0b 100644
--- a/VectorTest.java
+++ b/VectorTest.java
@@ -95,6 +95,18 @@ public class VectorTest {
                 { 3, 4 }
         };
         assertNull(Vector.matrixMultiplication(non3DSquare, 3));
+        int[][] non3DSquare1 = {
+                { 1, 2 },
+                { 3, 4 ,5}
+        };
+        assertNull(Vector.matrixMultiplication(non3DSquare1, 3));        
+        int[][] non3DSquare2 = {
+                { 1, 1, 1},
+                { 2, 2, 2},
+                { 3, 3, 3},
+                { 4, 4, 4}
+        };
+        assertNull(Vector.matrixMultiplication(non3DSquare2, 3));
 
         int[][] empty = new int[0][0];
         assertNull(Vector.matrixMultiplication(empty, 2));